King not returning for a dance (10)
I believe the answer is:
charleston
'dance' is the definition.
(I know that Charleston is a more specific form of the action dance)
'king not returning' is the wordplay.
'king' becomes 'charles' (King Charles I, II or III).
'returning' is a reversal indicator.
'not' reversed gives 'ton'.
'charles'+'ton'='CHARLESTON'
'for a' acts as a link.
(Other definitions for charleston that I've seen before include "Dance making" , "US city - 1920s' dance" , "Nineteen twenties dance" , "Lively 1920s' dance" , "Town of South Carolina which gave its name to a 1920s dance craze" .)